Krasinski announced the news of the baby’s arrival on the same day of her birth:
Wanted to let the news out directly. Emily and I are so incredibly happy to welcome our daughter Hazel into the world today! Happy bday!
— John Krasinski (@johnkrasinski) February 16, 2014
Krasinski (“The Office”) and Blunt have been together since 2008 and have been married since 2010. Hazel is the first child for both actors.